MOSCOW, March 12 (Reuters) - Russian gold producer Polyus has received a further 5 percent stake in the giant Sukhoi Log gold deposit from its project partner Rostec in return for a 0.28 percent stake in Polyus shares, Polyus said late on Monday.

The deal raises Polyus’ stake in Sukhoi Log, one of the largest untapped gold deposits in the world, to 63.4 percent. Rostec’s stake falls to 36.6 percent.

Polyus in January raised by 9 percent the estimated amount of mineral resources in the deposit to 63 million troy ounces of gold. (Reporting by Anton Kolodyazhnyy and Andrey Kuzmin Writing by Tom Balmforth Editing by Edmund Blair and Jan Harvey)